Syringe bulb and valve



(No Model.)

J. T. WOODS.

SYRINGE BUL'B AND VALVE.

No.- 247,142., Patented Sept-13,1881.

N. PETERS. Phclo-lilhcgmphur. Washmgiom D10 UNITED STATES PATENT OFFICE.

JOSEPH T. WOODS, OF TOLEDO, ASSIGNOR OF ONE-HALF TO WILLIAM H. HAVEN ANDJAOOB J. FLEOK, OF FINDLAY, OHIO.

SYRINGE BULB AND VALVE.

I SPECIFICATION forming part of Letters Patent No. 247,142, datedSeptember 13, 1881,

Application filed March 8, 1881.

To all whom tt may concern:

Be it known that I, J OSEPH THATGHER WOODS, a citizen of the UnitedStates, residing at Toledo,in the conntyof Lucas and State of Ohio, haveinvented certain new and useful Improvements in Bulbs and Valves forStomach-Pumps, Syringes, Aspirators, 850.; and I do hereby declarethefollowing to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference beinghad to theaccompanying drawings, and to the letters or figures of reference markedthereon,which form a part of this specification.

This invention relates to the rubber bulbs which are employed insyringes, stomachpumps, and aspirators. The rubber bulb or elastic globecommonly used in such devices is provided with an inlet and an outlettube, through which the fluid is admitted into and discharged from thebulb by the alternate contraction and expansion of the bulb, as will bereadily understood by those skilled in the art.

The invention consists in an improvement in the construction of theextremities of the bulb by the provision of inlet and outlet ball valvesto admit of the use of the bulb in the peculiar manner hereinafterspecified, and in the mode of securing the valve-seats in place, all asmore fully described in the following specification, and particularlypointed out in the claim.

In the drawings, Figure 1 is a side elevation of a bulb embodying myimprovement; and Fig. 2 is a longitudinal central section, taken on theline 1 1, Fig. 1.

The letter H indicates the body of the bulb, which is of theconstruction ordinarily employed in this class of syringes,stomachpumps, and aspirators, excepting, however, that the bulb is madea little thicker than usual, to increase its strength, and that it isformed with the ends O 0 extended sufficiently to inclose thevalve-seats andvalves. As both ends of this bulb are constructed alike,a description of one will serve for both.

At one end of the valve-chamber D is arranged the valve-seat G, and atthe opposite end of said chamber is arranged the valveseat A, both ofthese said valve-seats being firmly secured in place by the extended endof the bulb. The bulb is formed with abulge, a, at its end, said bulgeforming a recess, which receives the enlarged portion a of the (Nomodel.)

valveseat G, thereby effectively securing said seat in place. Thisrecess forms an annular seat or shoulder, a, against which the seat Grfits.

The outer valve-seat, A, is formed with a depression, B, and the end Oof the bulb is contracted, as at h, so as to fit into said depression ofthe outer seat, and thus retain the same firmly in place. The outervalve-seat is extended into a screw-nozzle, g, which projects out fromthe bulb end, and it is also formed with a flange, g, which restsagainst the tip of the bulb end.

E designates the ball-valve which is embulb causes the fluid to beejected through the upper outlet. By now reversing the position of thebulb and repeating the above operation there will be a reversal of theflow of the liquid, the ball-valves droppinginstantly by gravity, inorder to admit of such flow; hence the device can be operated withoutdisturbing the tubes, and the fluid ejected in the first instance bereadily withdrawn from the place where it was first caused to flow into.By holding the bulb in a horizontal position the valves will drop fromtheir seats, so that the device can be used as a siphon.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

The combination, with the elastic bulb, of the two tubular extended bulbends, each having a bulged and a contracted portion, and the twovalve-seats, one adapted to fit into the recess formed by said bulge andthe other formed with a recess to receive said contracted portion of thebulb end, ball-valves being employed in connection with the valve-seats,substantially as described.

In testimony whereof I a-flix my signature in presence of two witnesses.

Witnesses: JOSEPH THATCHER WOODS.

A. FARQUHARSON, E. H. FITCH.

